You start with a center square and sew strips on all four sides. My center squares are 2.5 inches and my strips are 1.5 inches wide. By the way, I'm using one fabric for all of the center squares and it is from the Etchings line by 3 Sisters for Moda. The red coordinates well with the French General reds.
After adding the strips, you trim. There is a companion book to the ruler, Positively Pineapple, that has the directions for using the ruler, along with several quilt projects. (The book seems to be out of print but there are plenty of used copies on Amazon and Ebay.)
After trimming the first set of strips, you have this square in a square.
Then you add your next set of strips and trim again.
You keep going in this fashion until your block is complete. I have quite a pile of trimmings!
In order to chain piece, I'm working on eight blocks at one time. So far, I've added two rounds of each color to the center square. The photo below shows what they look like now. The finished blocks will have four rounds of each color, with the last round of red strips forming the corner triangles, to square up the blocks.
I will be working on this project when I feel like piecing and working on my backlog of binding when I feel like hand sewing. Lots to do around here!